Stability of Metal-Oxide Varistor Characteristics in Exploitation Conditions

Metal Oxide ZnO-Based Varistor Ceramics

Model for zinc oxide varistor

Zinc oxide varistors are very complex systems, and the dominant mechanism of voltage barrier formation in these systems has not been well established. Yet the MNDO quantum mechanical theoretical calculation was used in this work to determine the most probable defect type at the surface of a ZnO cluster. The proposed model represents well the semiconducting nature as well as the defects at the Z...

The Effects of Electrical Degradation on the Microstructure of Metal Oxide Varistor

-In this paper, the findings from systematic experiments with the purpose to determine the degradation effect of single and multiple current pulses on the microstructure of the Metal Oxide (MO) varistor are described. Six distribution class varistors from one manufacturer were used in these experiments. The first part of the paper describes the electrical condition after application of single a...

Metal-oxide varistor: A new way to suppress transients (B/W)

Significance Part 6: Textbooks, tutorials and reviews Part 7: Mitigation techniques Trade press announcement of the introduction to the U.S. market of Metal-Oxide Varistors intended for incorporation in original equipment manufacturers (OEM) equipment, with discussion of the principle of operation, background information on the origin of transients, and application information. It is noteworthy...

Metal-oxide varistor: A new way to suppress transients (full color)

Significance Part 6: Textbooks, tutorials and reviews Part 7: Mitigation techniques Trade press announcement of the introduction to the U.S. market of Metal-Oxide Varistors intended for incorporation in original equipment manufacturers (OEM) equipment, with discussion of the principle of operation, background information on the origin of transients, and application information. It is noteworthy...